smtp4dev generating java MessagingException

I am working on a java server pages appllication that send email. The production server is a Linux box, but my development environment is Windows 7 (x64). I needed to be able to test the email functionality so I installed smtp4dev. The
application sends email to localhost.

When I send mail from the application (via Apache Tomcat running on my development machine), the application responds very slowly when I submit the page to send the mail. The smtp4dev log shows the resulting messages, but the application generates
the following error stack trace:

Sorry for the blunt message earlier. I just wanted to let you and others know that this is a known issue and that further details can be found in the linked work item. I'll post an update shortly in that work item regarding a fix.